Class A

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$50	0.96%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.96%

^[1]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Class C

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class C	$88	1.71%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.71%

^[2]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Class E

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class E	$64	1.24%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.24%

^[3]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Class R

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class R	$63	1.21%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.21%

^[4]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Class S

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$37	0.71%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.71%

^[5]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Institutional 2 Class

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 2 Class	$36	0.70%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.70%

^[6]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$34	0.65%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.65%

^[7]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Cornerstone Growth Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$37	0.71%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.71%

^[8]

47

Key Fund Statistics

Table Summary
Fund net assets	$6,335,317,711
Total number of portfolio holdings	47
Portfolio turnover for the reporting period	23%

Top Holdings

Table Summary
NVIDIA Corp.	13.6%
Apple, Inc.	10.4%
Microsoft Corp.	9.7%
Amazon.com, Inc.	6.5%
Alphabet, Inc., Class A	5.9%
Meta Platforms, Inc., Class A	4.8%
Broadcom, Inc.	4.8%
Eli Lilly & Co.	3.7%
Visa, Inc., Class A	2.7%
Alphabet, Inc., Class C	2.2%

Class A

This semi-annual shareholder report contains important information about Columbia Oregon Intermediate Municipal Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$42	0.81%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.81%

^[9]

187

Key Fund Statistics

Table Summary
Fund net assets	$298,219,363
Total number of portfolio holdings	187
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Oregon Health & Science University 07/01/2034 5.000%	2.5%
City of Portland Water System 04/01/2030 4.000%	2.5%
Tri-County Metropolitan Transportation District of Oregon 10/01/2032 5.000%	2.4%
Oregon Health & Science University 07/01/2032 5.000%	1.9%
City of Portland Sewer System 12/01/2042 5.000%	1.8%
State of Oregon Department of Transportation 11/15/2037 5.000%	1.8%
State of Oregon Housing & Community Services Department 01/10/2048 4.000%	1.7%
Puerto Rico Public Finance Corp. 08/01/2026 6.000%	1.7%
Port of Portland 07/01/2039 4.000%	1.7%
Washington Clackamas & Yamhill Counties School District No. 88J 06/15/2031 5.000%	1.6%

Class S

This semi-annual shareholder report contains important information about Columbia Oregon Intermediate Municipal Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$29	0.56%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.56%

^[10]

187

Key Fund Statistics

Table Summary
Fund net assets	$298,219,363
Total number of portfolio holdings	187
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Oregon Health & Science University 07/01/2034 5.000%	2.5%
City of Portland Water System 04/01/2030 4.000%	2.5%
Tri-County Metropolitan Transportation District of Oregon 10/01/2032 5.000%	2.4%
Oregon Health & Science University 07/01/2032 5.000%	1.9%
City of Portland Sewer System 12/01/2042 5.000%	1.8%
State of Oregon Department of Transportation 11/15/2037 5.000%	1.8%
State of Oregon Housing & Community Services Department 01/10/2048 4.000%	1.7%
Puerto Rico Public Finance Corp. 08/01/2026 6.000%	1.7%
Port of Portland 07/01/2039 4.000%	1.7%
Washington Clackamas & Yamhill Counties School District No. 88J 06/15/2031 5.000%	1.6%

Institutional 2 Class

This semi-annual shareholder report contains important information about Columbia Oregon Intermediate Municipal Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 2 Class	$27	0.53%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.53%

^[11]

187

Key Fund Statistics

Table Summary
Fund net assets	$298,219,363
Total number of portfolio holdings	187
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Oregon Health & Science University 07/01/2034 5.000%	2.5%
City of Portland Water System 04/01/2030 4.000%	2.5%
Tri-County Metropolitan Transportation District of Oregon 10/01/2032 5.000%	2.4%
Oregon Health & Science University 07/01/2032 5.000%	1.9%
City of Portland Sewer System 12/01/2042 5.000%	1.8%
State of Oregon Department of Transportation 11/15/2037 5.000%	1.8%
State of Oregon Housing & Community Services Department 01/10/2048 4.000%	1.7%
Puerto Rico Public Finance Corp. 08/01/2026 6.000%	1.7%
Port of Portland 07/01/2039 4.000%	1.7%
Washington Clackamas & Yamhill Counties School District No. 88J 06/15/2031 5.000%	1.6%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Oregon Intermediate Municipal Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$25	0.49%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.49%

^[12]

187

Key Fund Statistics

Table Summary
Fund net assets	$298,219,363
Total number of portfolio holdings	187
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Oregon Health & Science University 07/01/2034 5.000%	2.5%
City of Portland Water System 04/01/2030 4.000%	2.5%
Tri-County Metropolitan Transportation District of Oregon 10/01/2032 5.000%	2.4%
Oregon Health & Science University 07/01/2032 5.000%	1.9%
City of Portland Sewer System 12/01/2042 5.000%	1.8%
State of Oregon Department of Transportation 11/15/2037 5.000%	1.8%
State of Oregon Housing & Community Services Department 01/10/2048 4.000%	1.7%
Puerto Rico Public Finance Corp. 08/01/2026 6.000%	1.7%
Port of Portland 07/01/2039 4.000%	1.7%
Washington Clackamas & Yamhill Counties School District No. 88J 06/15/2031 5.000%	1.6%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Oregon Intermediate Municipal Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$29	0.56%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.56%

^[13]

187

Key Fund Statistics

Table Summary
Fund net assets	$298,219,363
Total number of portfolio holdings	187
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Oregon Health & Science University 07/01/2034 5.000%	2.5%
City of Portland Water System 04/01/2030 4.000%	2.5%
Tri-County Metropolitan Transportation District of Oregon 10/01/2032 5.000%	2.4%
Oregon Health & Science University 07/01/2032 5.000%	1.9%
City of Portland Sewer System 12/01/2042 5.000%	1.8%
State of Oregon Department of Transportation 11/15/2037 5.000%	1.8%
State of Oregon Housing & Community Services Department 01/10/2048 4.000%	1.7%
Puerto Rico Public Finance Corp. 08/01/2026 6.000%	1.7%
Port of Portland 07/01/2039 4.000%	1.7%
Washington Clackamas & Yamhill Counties School District No. 88J 06/15/2031 5.000%	1.6%

Class A

This semi-annual shareholder report contains important information about Columbia Total Return Municipal Income Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$39	0.75%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.75%

^[14]

409

Additional Information [Text Block]

Key Fund Statistics

Table Summary
Fund net assets	$1,704,870,719
Total number of portfolio holdings	409
Portfolio turnover for the reporting period	7%

Fund Name

Columbia Total Return Municipal Income Fund

Trading Symbol

COLCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

Additional Information Website

columbiathreadneedleus.com/resources/literature

Expenses Paid, Amount

$ 70

AssetsNet

$ 1,704,870,719

InvestmentCompanyPortfolioTurnover

7.00%

Holdings [Text Block]

Top States/Territories

Table Summary
Texas	12.8%
New York	12.6%
Pennsylvania	6.8%
Illinois	6.6%
New Jersey	5.1%
Alabama	3.7%
California	3.4%
Georgia	3.2%
Puerto Rico	3.1%
Ohio	3.1%

Asset Categories

Table Summary
Municipal Bonds		92.9%
Money Market Funds		3.5%
Floating Rate Notes		2.7%
Other		0.1%

Class S

This semi-annual shareholder report contains important information about Columbia Total Return Municipal Income Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$29	0.55%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.55%

^[16]

409

Additional Information [Text Block]

Key Fund Statistics

Table Summary
Fund net assets	$1,704,870,719
Total number of portfolio holdings	409
Portfolio turnover for the reporting period	7%

Fund Name

Columbia Total Return Municipal Income Fund

Trading Symbol

CADMX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

Additional Information Website

columbiathreadneedleus.com/resources/literature

Expenses Paid, Amount

$ 28

AssetsNet

$ 1,704,870,719

InvestmentCompanyPortfolioTurnover

7.00%

Holdings [Text Block]

Top States/Territories

Table Summary
Texas	12.8%
New York	12.6%
Pennsylvania	6.8%
Illinois	6.6%
New Jersey	5.1%
Alabama	3.7%
California	3.4%
Georgia	3.2%
Puerto Rico	3.1%
Ohio	3.1%

Asset Categories

Table Summary
Municipal Bonds		92.9%
Money Market Funds		3.5%
Floating Rate Notes		2.7%
Other		0.1%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Total Return Municipal Income Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$25	0.48%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.48%

^[18]

409

Additional Information [Text Block]

Key Fund Statistics

Table Summary
Fund net assets	$1,704,870,719
Total number of portfolio holdings	409
Portfolio turnover for the reporting period	7%

Fund Name

Columbia Total Return Municipal Income Fund

Trading Symbol

CTEZX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

Additional Information Website

columbiathreadneedleus.com/resources/literature

Expenses Paid, Amount

$ 29

AssetsNet

$ 1,704,870,719

InvestmentCompanyPortfolioTurnover

7.00%

Holdings [Text Block]

Top States/Territories

Table Summary
Texas	12.8%
New York	12.6%
Pennsylvania	6.8%
Illinois	6.6%
New Jersey	5.1%
Alabama	3.7%
California	3.4%
Georgia	3.2%
Puerto Rico	3.1%
Ohio	3.1%

Asset Categories

Table Summary
Municipal Bonds		92.9%
Money Market Funds		3.5%
Floating Rate Notes		2.7%
Other		0.1%

Class A

This semi-annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$22	0.44%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.44%

^[20]

239

Key Fund Statistics

Table Summary
Fund net assets	$1,532,763,952
Total number of portfolio holdings	239
Portfolio turnover for the reporting period	44%

Top Holdings

Table Summary
GMF Floorplan Owner Revolving Trust 03/15/2029 5.130%	1.8%
Ford Credit Auto Owner Trust 11/15/2034 3.880%	1.7%
Nissan Master Owner Trust Receivables 02/15/2029 5.050%	1.7%
Volkswagen Auto Lease Trust 06/21/2027 5.210%	1.5%
Ford Credit Floorplan Master Owner Trust 05/15/2028 4.920%	1.4%
GMF Floorplan Owner Revolving Trust 06/15/2028 5.340%	1.3%
GS Mortgage Securities Corp. II 09/10/2038 4.322%	1.0%
Bank of America Corp. 09/15/2027 5.000%	1.0%
U.S. Treasury Bills 02/05/2026	1.0%
Citigroup, Inc. 06/09/2027 1.462%	1.0%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$12	0.24%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.24%

^[21]

239

Key Fund Statistics

Table Summary
Fund net assets	$1,532,763,952
Total number of portfolio holdings	239
Portfolio turnover for the reporting period	44%

Top Holdings

Table Summary
GMF Floorplan Owner Revolving Trust 03/15/2029 5.130%	1.8%
Ford Credit Auto Owner Trust 11/15/2034 3.880%	1.7%
Nissan Master Owner Trust Receivables 02/15/2029 5.050%	1.7%
Volkswagen Auto Lease Trust 06/21/2027 5.210%	1.5%
Ford Credit Floorplan Master Owner Trust 05/15/2028 4.920%	1.4%
GMF Floorplan Owner Revolving Trust 06/15/2028 5.340%	1.3%
GS Mortgage Securities Corp. II 09/10/2038 4.322%	1.0%
Bank of America Corp. 09/15/2027 5.000%	1.0%
U.S. Treasury Bills 02/05/2026	1.0%
Citigroup, Inc. 06/09/2027 1.462%	1.0%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Ultra Short Term Bond Fund (the Fund) for the period of August 1, 2025 to January 31, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$15	0.29%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.29%

^[22]

239

Key Fund Statistics

Table Summary
Fund net assets	$1,532,763,952
Total number of portfolio holdings	239
Portfolio turnover for the reporting period	44%